[gcc/devel/omp/gcc-12] Document/verify another aspect of OpenACC 'async' semantics in 'libgomp.oacc-c-c++-common/data-3.c'

[Thomas Schwinge <tschwinge@gcc.gnu.org>]

https://gcc.gnu.org/g:b13cc8db8d4a6fd82b9b540945723d2eca293e0c

commit b13cc8db8d4a6fd82b9b540945723d2eca293e0c
Author: Thomas Schwinge <thomas@codesourcery.com>
Date:   Fri Feb 24 16:21:31 2023 +0100

    Document/verify another aspect of OpenACC 'async' semantics in 'libgomp.oacc-c-c++-common/data-3.c'
    
    ... that I almost broke with later implementation changes.
    
            libgomp/
            * testsuite/libgomp.oacc-c-c++-common/data-3.c: Document/verify
            another aspect of OpenACC 'async' semantics.
    
    (cherry picked from commit 442d51a20ef13a8e6c080ca30bc37fc93b6bfac4)

Diff:
---
 libgomp/ChangeLog.omp                                | 6 ++++++
 libgomp/testsuite/libgomp.oacc-c-c++-common/data-3.c | 4 ++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/libgomp/ChangeLog.omp b/libgomp/ChangeLog.omp
index 633811af5a4..402b14311a8 100644
--- a/libgomp/ChangeLog.omp
+++ b/libgomp/ChangeLog.omp
@@ -3,6 +3,12 @@
 	Backported from master:
 	2023-03-10  Thomas Schwinge  <thomas@codesourcery.com>
 
+	* testsuite/libgomp.oacc-c-c++-common/data-3.c: Document/verify
+	another aspect of OpenACC 'async' semantics.
+
+	Backported from master:
+	2023-03-10  Thomas Schwinge  <thomas@codesourcery.com>
+
 	* plugin/plugin-gcn.c (gcn_exec): Fix 'acc_ev_enqueue_launch_end'
 	position.
 	* testsuite/libgomp.oacc-c-c++-common/acc_prof-parallel-1.c:
diff --git a/libgomp/testsuite/libgomp.oacc-c-c++-common/data-3.c b/libgomp/testsuite/libgomp.oacc-c-c++-common/data-3.c
index 5ec50b808a7..c422cbcd325 100644
--- a/libgomp/testsuite/libgomp.oacc-c-c++-common/data-3.c
+++ b/libgomp/testsuite/libgomp.oacc-c-c++-common/data-3.c
@@ -144,8 +144,8 @@ main (int argc, char **argv)
 
 #pragma acc exit data copyout (a[0:N]) copyout (b[0:N]) copyout (c[0:N]) \
   copyout (d[0:N]) copyout (e[0:N]) wait (1, 2, 3, 4) async (1)
-#pragma acc exit data delete (N)
-#pragma acc wait (1)
+#pragma acc exit data delete (N) wait(1) async(2)
+#pragma acc wait (2)
 
   for (i = 0; i < N; i++)
     {